Alcithoe wilsonae, commonly known as Wilson’s Volute, is a species of large predatory sea snail, belonging to the family Volutidae. This species is known for its distinct shell shape and vibrant coloration, making it a popular specimen among shell collectors.
Description & Characteristics
Alcithoe wilsonae possesses a large, heavy shell with a characteristically elongated, fusiform shape. The shell is typically a creamy white or yellowish-brown color, adorned with intricate brown or reddish-brown markings. The outer lip of the shell is usually thickened and has a distinctive, scalloped edge. The maximum size of Alcithoe wilsonae can reach up to 200 mm in length, making it one of the larger members of the Volutidae family.
Habitat and Occurrence
Alcithoe wilsonae is predominantly found in the coastal waters of New Zealand. It is a benthic species, meaning it inhabits the seafloor, and prefers sandy or muddy substrates. The species has a depth range of 5 to 100 meters, often residing in the neritic zone, which is the marine zone extending from the shoreline to the edge of the continental shelf. This species is particularly common in the areas around the North and South Islands of New Zealand, demonstrating its preference for the temperate waters of this region.
Taxonomy
Alcithoe wilsonae is classified within the Class: Gastropoda, Order: Neogastropoda, and Family: Volutidae. The Gastropoda class encompasses a vast array of mollusks, characterized by their single, spirally coiled shell. Within this class, the Neogastropoda order represents a group of predatory gastropods, known for their advanced nervous systems and often possessing a siphon, a specialized respiratory structure. The Volutidae family, to which Alcithoe wilsonae belongs, is a diverse group of sea snails characterized by their heavy, usually ovoid shells.
Feeding
Alcithoe wilsonae is a carnivorous species, feeding primarily on other marine invertebrates, such as polychaetes, crustaceans, and other mollusks. This species uses its radula, a ribbon-like structure studded with teeth, to scrape and tear its prey. The predatory nature of Alcithoe wilsonae highlights its role as a significant predator within the benthic ecosystems it inhabits.
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